Adele's voice won her six Grammy awards [this year], including for record, song and album of the year.

But that voice was in trouble last November, when the 23-year-old underwent vocal cord microsurgery to stop recurrent bleeding from a benign polyp, a problem that had caused her to cancel tour dates, Celebrity Circuit reported.

The surgery took place at Massachusetts General Hospital, performed by Dr. Steven Zeitels of the Center for Laryngeal Surgery at the hospital.